Patent GB-190909313-A (GB)
Title: A Combined Writing Machine for Persons who can See and for Relief Writing for the Blind.
Inventor: CAIZERGUES ANDRE EUGENE ANNE
IPC: B41J3/32
Filed: 1909-04-20
Granted: 1910-04-20
Abstract: 9313. Caizergues, A. E. A. Sept. 24, 1908, [Convention date]. Type-lever machines with two sets of printing- mechanism; machines for braille type.-Two sets of type-levers may be operated independently or both at one time by a single keyboard ; the front set produces an impression in relief for the blind, and the rear set writing of the ordinary kind. Type-lever actions; keys and keyboards; shift-key actions; platen-shift mechanism.-(1) The typelevers B, C are operated from the keys E by means of links d, and are enlarged around their pivots for guidance during the whole of their movement in the bearings D. These bearirgs may be held below the positions shown in Fig. 2 against the action of springs, by means of spring-studs engaging holes in the frame A, so that the rods d are not then actuated by the brackets e when the keys are depressed ; either set of type-levers B, C may thus be thrown out of action. The type-levers C are provided with small type c<1>, capitals c<2>, and numbers &c. c<3>. (2) The keys E are lifted by means of s rings e<1> of comb-like construction. The keybuttons bearing the characters are covered with caps of transparent material on which the blind characters are embessed. Fig. 21 shows the arrangement of characters on the keyboard. (3) The shift-keys for moving the paper-carriage T in order to print from the type c<2>, c<3> also impress the capital or number &c. symbol for the blind. (4) The two shift-keys depress to different extents a lever H, thereby actuating a linkage h, h<1> to move the roller F of the carriage T opposite either of the types c<2>, c<3>. Two releasable spring-catches I co-operate with the lever H. Paper-carriages; sheet feeding and guiding arrangements; platen-roller couplings.-The paper for the blind is guided between grooved rollers J, Fig. 2,. and plates i to a polygonal perforated roller L, against which it is pressed on each side of the impression point by springs M ; the rollers J are geared to the roller L. Circular guides for the edges of the paper co-operate with the roller F ; the paper is introduced at the back of the roller. The carriages S, T slide upon rods s, t and by rollers s<2>, t<2> upon rails s<1>, t<1>. The roller F is provided with a clutch released by lateral movement of the left-hand finger-wheel. Platen rotation for checking the writing. The left-hand finger-wheel of the roller L, Fig. 2, is connected with the platen spindle by means of a spring, so that the roller may be turned up to check the relief writing ; the roller returns to its original position when the finger-wheel is released. The roller F is turned up at the same time unless its gearing with the roller L has been disconnected ; this disconnecting enables the roller F to be independently rotated. Line-spacing mechanism.-The pawl mechanism K, Fig. 12, turns and locks the spindle of the roller L, the spindle being connected with the roller by means of the s ring described above. The ratchet-wheel k' has as many teeth as the roller L has faces. A cardan shaft m, geared by helicoidal gearing to the roller F and by bevelgearing to the roller L, transmits the movements to the roller F, except when the finger-wheel clutch is operated to disconnect the roller F from its driving-gear. Letter-spacing mechanism.-The carriages S, T, Fig. 2, are geared tc move together by means of rack gearing s<3>, s<4>, t<3>, t<4>. Depression of the universal bar o<5> moves a pawl o<2>, Fig. 11, to the right, and its subsequent return under spring action moves the carriage rack s<5>. A pawl o<1> prevents the carriage from moving to the right. Carriage-releasing arrangements.-Depression of a pivoted bar O, Fig. 11, by a lever k<2>, moves the pawls away from the rack s<5> and frees the carriage. A spring returns the bar 0 when the lever k<2> is released. Carriage-returning mechanism.-A band attached to the carriage S winds upon a spring pulley and tends to pull the carriage to the right. Alarms; margin stops.-Fig. 16 shows the margin stops s<6>, s<7> carried by the toothed guide-bar s. The stops are disengaged for adjustment by rotating them by their tails s<8>, s<9> so that the stopsprings disengage the teeth of the bar s. The stop s<6> carries a bell which is struck by a hammer on the carriage S. Ink-ribbon mechanism.-The ribbon winds from one drum to another u<2>, Fig. 18, under the action of a universal bar V, which actuates a ratchet v' so as to rotate a cam v<3> and move the ribbon widthways. On the return of the spools, a pawl v<6> moves the ribbon lengthways. The ribbon may be wound back on to the other spool by means of a hand-crank and bevel-geariog. The spools are mounted in a frame which moves hodily upon guides a<4> both during the ribbon-feed movewent and when the carriage T is moved for case-shift.